From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tilman Schmidt Subject: [2.6.25-rc5-mm1] regression: cannot run Postfix sendmail command as non-root Date: Thu, 13 Mar 2008 20:48:32 +0100 Message-ID: <47D98510.60801@imap.cc> References: <20080311011434.ad8c8d7d.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig7BEB4EC2850E682582E0D096" Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, David Miller , pekkas@netcore.fi, yoshfuji@linux-ipv6.org To: Andrew Morton Return-path: In-Reply-To: <20080311011434.ad8c8d7d.akpm@linux-foundation.org> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig7BEB4EC2850E682582E0D096 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Am 11.03.2008 09:14 schrieb Andrew Morton: > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.25-rc= 5/2.6.25-rc5-mm1/ I'm noticing a strange effect with this: On my openSUSE 10.3 development machine with SUSEs default MTA Postfix installed, I occasionally send a pre-formatted mail by feeding it directly into "/usr/sbin/sendmail -t". If I try that while running a 2.6.25-rc5-mm1 kernel, I get: ts@xenon:~/kernel> /usr/sbin/sendmail -t < patch-usb-reduce-syslog-clutte= r-v3 postdrop: warning: can't open /proc/net/if_inet6 (Permission denied) - sk= ipping IPv6 configuration postdrop: fatal: parameter inet_interfaces: no local interface found for = ::1 sendmail: warning: command "/usr/sbin/postdrop -r" exited with status 1 sendmail: fatal: ts(1000): unable to execute /usr/sbin/postdrop -r: Succe= ss ts@xenon:~/kernel> and unsurprisingly, the mail is not sent. If I do the same as root, everything works as usual, there is no console output from the sendmail command, and the mail goes out as it should. All other networking applications appear to be running normally. On a 2.6.25-rc5 (non-mm) kernel I do not need to run the sendmail command as root. It works just as well if I run it as myself. IPv6 is not in use on that machine. The Ethernet interface has just the link local IPv6 address. Possibly relevant information: ts@xenon:~> /sbin/ifconfig -a eth0 Protokoll:Ethernet Hardware Adresse 00:19:D1:03:D8:FF inet Adresse:192.168.59.102 Bcast:192.168.59.255 Maske:255.25= 5.255.0 inet6 Adresse: fe80::219:d1ff:fe03:d8ff/64 G=FCltigkeitsbereich= :Verbindung UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1 RX packets:78 errors:0 dropped:0 overruns:0 frame:0 TX packets:145 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 Sendewarteschlangenl=E4nge:100 RX bytes:9547 (9.3 Kb) TX bytes:17952 (17.5 Kb) Speicher:92c00000-92c20000 lo Protokoll:Lokale Schleife inet Adresse:127.0.0.1 Maske:255.0.0.0 inet6 Adresse: ::1/128 G=FCltigkeitsbereich:Maschine UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:2 errors:0 dropped:0 overruns:0 frame:0 TX packets:2 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 Sendewarteschlangenl=E4nge:0 RX bytes:100 (100.0 b) TX bytes:100 (100.0 b) ts@xenon:~/kernel> ls -l /proc/net/if_inet6 -r--r--r-- 1 root root 0 13. M=E4r 19:26 /proc/net/if_inet6 ts@xenon:~> cat /proc/net/if_inet6 fe800000000000000219d1fffe03d8ff 02 40 20 80 eth0 00000000000000000000000000000001 01 80 10 80 lo ts@xenon:~> uname -a Linux xenon 2.6.25-rc5-mm1-testing #1 SMP PREEMPT Tue Mar 11 14:34:49 CET= 2008 i686 i686 i386 GNU/Linux As you see, I can cat /proc/net/if_inet6 as regular (non-root) user just fine, even though Postfix complains it cannot access it. The content of /proc/net/if_inet6 is identical if I cat it on kernel 2.6.25-rc5 mainline. CCing a selection of IPv6 networking related maintainer addresses. If you need more information or want me to test something, let me know. HTH T. --=20 Tilman Schmidt E-Mail: tilman@imap.cc Bonn, Germany Diese Nachricht besteht zu 100% aus wiederverwerteten Bits. Unge=F6ffnet mindestens haltbar bis: (siehe R=FCckseite) --------------enig7BEB4EC2850E682582E0D096 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3rc1 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFH2YUcMdB4Whm86/kRAo6rAJ0QvX/WAuv5XvPjBuYcbZ2bHjc+cwCeMF6H uaawCA5cg7/YRUGCCDZJNkY= =1Drp -----END PGP SIGNATURE----- --------------enig7BEB4EC2850E682582E0D096--